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Is stalling a DC motor Bad?
Yes, you can stall a smaller DC motor briefly (3 to 5 seconds is fine), at its rated full load current. The windings will heat up, and there will be some excessive heating of the commutator, but that usually doesn’t affect the service life.
What is stalling in induction motor?
In a simple definition, motor stalling means that the electric motor has more load on it than it is designed for and it can no longer supply enough torque to keep it spinning. As the load increase beyond the capability of the induction motor, the slip increases and you move up the torque curve.
What should the stall current be on a DC motor?
That makes 12.76 A a reasonable estimate for stall current. This is a reasonable approximation if the gearbox is ignored. Some portion of the 0.52A no-load current is due to the torque required to overcome friction, so the actual torque experienced by the stalled motor will be a little higher at stall than the calculated stall torque.
Which is better rated current or stall current?
For nearly all motors, the rated current is much less than stall/inrush current. Most motors are rated for continuous operation at rated current. A typical motor can withstand stall current for no more than a few seconds. DC motors that are rated in the kilowatt range typically can not withstand stall current at all.
Is the stall current calculated with a gearbox?
The calculated stall current seems reasonable, but the method of computation does not. The data table is for performance of the motor only. It does not include a gearbox. There is no reason to consider the gearbox in estimating the stall current. If the no-load data was for a motor with a gearbox, the gearbox would be important.
What’s the lowest speed a DC motor can go?
Dayton makes a well-priced range of 12V DC gear motors going as low as 0.6RPM (IIRC). Then, if you wish to use the rated speed as the max speed, then a PWM speed controller can be quite handy.